Cruz, A. C., Dayrit, N. M., & Yap, G. R. (1974). Content analysis of biology for philippine high schools: The relationships of living things, textbook and laboratory manual.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCruz, Azucena C., Nenita M. Dayrit, और Guafdalupe R. Yap. Content Analysis of Biology for Philippine High Schools: The Relationships of Living Things, Textbook and Laboratory Manual. Quezon City, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCruz, Azucena C., et al. Content Analysis of Biology for Philippine High Schools: The Relationships of Living Things, Textbook and Laboratory Manual. 1974.
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